How much potassium is in mozzarella?
Mozzarella has 24 mg of potassium per 1 oz / 1 stick (28 g) — about 1% of the 4,700 mg Daily Value. That's 84 mg per 100 g, roughly 0.1× a medium banana (~422 mg).
USDA FoodData Central · part-skim · FDC 170847
Potassium by portion
| Portion | Potassium | % DV | Sodium | Calories |
|---|---|---|---|---|
| 1 oz / 1 stick (28 g) | 24 mg | 1% | 173 mg | 71 |
| 100 g | 84 mg | 2% | 619 mg | 254 |
| 1 oz (28 g) | 24 mg | 1% | 175 mg | 72 |
% DV against the FDA Daily Value of 4,700 mg of potassium. Whole foods are naturally potassium-rich and low in sodium — the ratio heart guidelines (like DASH) favor. Values from USDA per-100 g data (FDC 170847, SR Legacy). part-skim.
Mozzarella is a protein and calcium food, and potassium is simply not part of its story. A part-skim 1 oz stick (28 g) carries only about 24 mg of potassium, which is 84 mg per 100 g — well under 1% of the 4,700 mg Daily Value. For comparison, a medium banana (~422 mg) holds the potassium of nearly eighteen mozzarella sticks. If you came here hoping cheese could nudge your potassium up, the honest answer is that it can’t: mozzarella’s strengths lie elsewhere, and potassium isn’t one of them.
Why cheese is low in potassium
The shortfall is built into how cheese is made. Milk does carry potassium, but much of it stays dissolved in the whey — the watery fraction that’s drained off when milk is curdled into cheese. What’s left behind in the curd is concentrated in protein, fat, and calcium, but stripped of a good share of the potassium. That’s why liquid dairy beats cheese here: a glass of milk or a cup of yogurt supplies far more potassium than mozzarella, even though all three start from the same milk. So among dairy foods, mozzarella sits near the bottom for this particular mineral.
Where mozzarella actually earns its place
None of this is a knock on mozzarella — it’s a reminder of what to eat it for. Potassium is the blood-pressure mineral, working as the counterweight to sodium to relax blood-vessel walls (the reason potassium-rich, lower-sodium patterns like DASH are tied to healthier blood pressure), and it also drives fluid balance, nerve signaling, and muscle function. Most people fall short of 4,700 mg, and mozzarella won’t help close the gap — worse, at about 619 mg of sodium per 100 g it leans the wrong way on the potassium-to-sodium ratio. Get your potassium from fruit, vegetables, beans, and liquid dairy, and lean on mozzarella for what it does well: efficient complete protein and a real calcium payload. This is general nutrition information, not medical advice. For that side of the cheese, see protein in mozzarella.
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Frequently Asked Questions
How much potassium is in a 1 oz stick of mozzarella?
Only about 24 mg of potassium in a 1 oz portion of part-skim mozzarella (28 g), which is 84 mg per 100 g (USDA FDC 170847). That's under 1% of the Daily Value — mozzarella is a protein-and-calcium food, not a meaningful potassium source.
What percent of the daily value for potassium is in mozzarella?
Well under 1% of the 4,700 mg FDA Daily Value from a 1 oz stick (~24 mg). Even 100 g of mozzarella supplies only about 84 mg, roughly 2% of the target. Cheese in general is a poor potassium source, so look to fruit, vegetables, dairy milk, and beans to actually hit the number.
How does mozzarella's potassium compare to a banana?
It isn't close. A 1 oz mozzarella stick has about 24 mg of potassium against roughly 422 mg in a medium banana — so a banana carries the potassium of nearly 18 mozzarella sticks. If potassium is what you're after, mozzarella isn't the food to reach for.
Does mozzarella have less potassium than other dairy?
Yes. Liquid dairy like milk and yogurt is far higher in potassium than hard or semi-hard cheese, because much of milk's potassium stays in the whey that's drained off during cheesemaking. So a glass of milk or a cup of yogurt beats mozzarella on potassium handily, even though all three are dairy.
Why does potassium matter, and is mozzarella a good source?
Potassium helps regulate blood pressure by balancing sodium and relaxing blood vessel walls, and it supports fluid balance, nerve signaling, and muscle function. Most people fall short of the 4,700 mg target. Mozzarella barely helps — about 24 mg per stick (USDA FDC 170847) — and it's relatively high in sodium, so it sits on the wrong side of the potassium-to-sodium ratio. Eat it for protein and calcium, and get potassium elsewhere. This is general nutrition information, not medical advice.
When was this data last verified?
2026-06-18, against USDA FoodData Central FDC 170847 (Cheese, mozzarella, part skim milk; SR Legacy). We re-verify reference pages periodically and update when USDA revises the entry.
Whole-food values are USDA reference data, not a Labelgrade (that score is for branded packaged products). High-potassium diets aren't for everyone — people with kidney disease are often told to limit it; this is reference data, not medical advice. See our methodology.